如何在模板中访问django表单字段名称

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    form = MyForm()
    return render(request, 'my_template.html', {'form': form})

<form method="post">
    {% csrf_token %}
    {{ form.field_name.label }}: {{ form.field_name }}
    <button type="submit">提交</button>
</form>